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Diffstat (limited to 'actionpack/lib/action_view/helpers/atom_feed_helper.rb')
| -rw-r--r-- | actionpack/lib/action_view/helpers/atom_feed_helper.rb | 203 |
1 files changed, 0 insertions, 203 deletions
diff --git a/actionpack/lib/action_view/helpers/atom_feed_helper.rb b/actionpack/lib/action_view/helpers/atom_feed_helper.rb deleted file mode 100644 index 42b1dd8933..0000000000 --- a/actionpack/lib/action_view/helpers/atom_feed_helper.rb +++ /dev/null @@ -1,203 +0,0 @@ -require 'set' - -module ActionView - # = Action View Atom Feed Helpers - module Helpers - module AtomFeedHelper - # Adds easy defaults to writing Atom feeds with the Builder template engine (this does not work on ERB or any other - # template languages). - # - # Full usage example: - # - # config/routes.rb: - # Basecamp::Application.routes.draw do - # resources :posts - # root to: "posts#index" - # end - # - # app/controllers/posts_controller.rb: - # class PostsController < ApplicationController::Base - # # GET /posts.html - # # GET /posts.atom - # def index - # @posts = Post.all - # - # respond_to do |format| - # format.html - # format.atom - # end - # end - # end - # - # app/views/posts/index.atom.builder: - # atom_feed do |feed| - # feed.title("My great blog!") - # feed.updated(@posts[0].created_at) if @posts.length > 0 - # - # @posts.each do |post| - # feed.entry(post) do |entry| - # entry.title(post.title) - # entry.content(post.body, type: 'html') - # - # entry.author do |author| - # author.name("DHH") - # end - # end - # end - # end - # - # The options for atom_feed are: - # - # * <tt>:language</tt>: Defaults to "en-US". - # * <tt>:root_url</tt>: The HTML alternative that this feed is doubling for. Defaults to / on the current host. - # * <tt>:url</tt>: The URL for this feed. Defaults to the current URL. - # * <tt>:id</tt>: The id for this feed. Defaults to "tag:#{request.host},#{options[:schema_date]}:#{request.fullpath.split(".")[0]}" - # * <tt>:schema_date</tt>: The date at which the tag scheme for the feed was first used. A good default is the year you - # created the feed. See http://feedvalidator.org/docs/error/InvalidTAG.html for more information. If not specified, - # 2005 is used (as an "I don't care" value). - # * <tt>:instruct</tt>: Hash of XML processing instructions in the form {target => {attribute => value, }} or {target => [{attribute => value, }, ]} - # - # Other namespaces can be added to the root element: - # - # app/views/posts/index.atom.builder: - # atom_feed({'xmlns:app' => 'http://www.w3.org/2007/app', - # 'xmlns:openSearch' => 'http://a9.com/-/spec/opensearch/1.1/'}) do |feed| - # feed.title("My great blog!") - # feed.updated((@posts.first.created_at)) - # feed.tag!(openSearch:totalResults, 10) - # - # @posts.each do |post| - # feed.entry(post) do |entry| - # entry.title(post.title) - # entry.content(post.body, type: 'html') - # entry.tag!('app:edited', Time.now) - # - # entry.author do |author| - # author.name("DHH") - # end - # end - # end - # end - # - # The Atom spec defines five elements (content rights title subtitle - # summary) which may directly contain xhtml content if type: 'xhtml' - # is specified as an attribute. If so, this helper will take care of - # the enclosing div and xhtml namespace declaration. Example usage: - # - # entry.summary type: 'xhtml' do |xhtml| - # xhtml.p pluralize(order.line_items.count, "line item") - # xhtml.p "Shipped to #{order.address}" - # xhtml.p "Paid by #{order.pay_type}" - # end - # - # - # <tt>atom_feed</tt> yields an +AtomFeedBuilder+ instance. Nested elements yield - # an +AtomBuilder+ instance. - def atom_feed(options = {}, &block) - if options[:schema_date] - options[:schema_date] = options[:schema_date].strftime("%Y-%m-%d") if options[:schema_date].respond_to?(:strftime) - else - options[:schema_date] = "2005" # The Atom spec copyright date - end - - xml = options.delete(:xml) || eval("xml", block.binding) - xml.instruct! - if options[:instruct] - options[:instruct].each do |target,attrs| - if attrs.respond_to?(:keys) - xml.instruct!(target, attrs) - elsif attrs.respond_to?(:each) - attrs.each { |attr_group| xml.instruct!(target, attr_group) } - end - end - end - - feed_opts = {"xml:lang" => options[:language] || "en-US", "xmlns" => 'http://www.w3.org/2005/Atom'} - feed_opts.merge!(options).reject!{|k,v| !k.to_s.match(/^xml/)} - - xml.feed(feed_opts) do - xml.id(options[:id] || "tag:#{request.host},#{options[:schema_date]}:#{request.fullpath.split(".")[0]}") - xml.link(:rel => 'alternate', :type => 'text/html', :href => options[:root_url] || (request.protocol + request.host_with_port)) - xml.link(:rel => 'self', :type => 'application/atom+xml', :href => options[:url] || request.url) - - yield AtomFeedBuilder.new(xml, self, options) - end - end - - class AtomBuilder #:nodoc: - XHTML_TAG_NAMES = %w(content rights title subtitle summary).to_set - - def initialize(xml) - @xml = xml - end - - private - # Delegate to xml builder, first wrapping the element in a xhtml - # namespaced div element if the method and arguments indicate - # that an xhtml_block? is desired. - def method_missing(method, *arguments, &block) - if xhtml_block?(method, arguments) - @xml.__send__(method, *arguments) do - @xml.div(:xmlns => 'http://www.w3.org/1999/xhtml') do |xhtml| - block.call(xhtml) - end - end - else - @xml.__send__(method, *arguments, &block) - end - end - - # True if the method name matches one of the five elements defined - # in the Atom spec as potentially containing XHTML content and - # if type: 'xhtml' is, in fact, specified. - def xhtml_block?(method, arguments) - if XHTML_TAG_NAMES.include?(method.to_s) - last = arguments.last - last.is_a?(Hash) && last[:type].to_s == 'xhtml' - end - end - end - - class AtomFeedBuilder < AtomBuilder #:nodoc: - def initialize(xml, view, feed_options = {}) - @xml, @view, @feed_options = xml, view, feed_options - end - - # Accepts a Date or Time object and inserts it in the proper format. If nil is passed, current time in UTC is used. - def updated(date_or_time = nil) - @xml.updated((date_or_time || Time.now.utc).xmlschema) - end - - # Creates an entry tag for a specific record and prefills the id using class and id. - # - # Options: - # - # * <tt>:published</tt>: Time first published. Defaults to the created_at attribute on the record if one such exists. - # * <tt>:updated</tt>: Time of update. Defaults to the updated_at attribute on the record if one such exists. - # * <tt>:url</tt>: The URL for this entry. Defaults to the polymorphic_url for the record. - # * <tt>:id</tt>: The ID for this entry. Defaults to "tag:#{@view.request.host},#{@feed_options[:schema_date]}:#{record.class}/#{record.id}" - # * <tt>:type</tt>: The TYPE for this entry. Defaults to "text/html". - def entry(record, options = {}) - @xml.entry do - @xml.id(options[:id] || "tag:#{@view.request.host},#{@feed_options[:schema_date]}:#{record.class}/#{record.id}") - - if options[:published] || (record.respond_to?(:created_at) && record.created_at) - @xml.published((options[:published] || record.created_at).xmlschema) - end - - if options[:updated] || (record.respond_to?(:updated_at) && record.updated_at) - @xml.updated((options[:updated] || record.updated_at).xmlschema) - end - - type = options.fetch(:type, 'text/html') - - @xml.link(:rel => 'alternate', :type => type, :href => options[:url] || @view.polymorphic_url(record)) - - yield AtomBuilder.new(@xml) - end - end - end - - end - end -end |